<button class="button">
  <svg xmlns="http://www.w3.org/2000/svg">
    <rect class="border" pathLength="100"></rect>
    <rect class="loading" pathLength="100"></rect>

    <svg
      class="done-svg"
      xmlns="http://www.w3.org/2000/svg"
      viewBox="0 0 24 24"
    >
      <path
        class="done done-cloud"
        pathLength="100"
        d="M 6.5,20 Q 4.22,20 2.61,18.43 1,16.85 1,14.58 1,12.63 2.17,11.1 3.35,9.57 5.25,9.15 5.88,6.85 7.75,5.43 9.63,4 12,4 14.93,4 16.96,6.04 19,8.07 19,11 q 1.73,0.2 2.86,1.5 1.14,1.28 1.14,3 0,1.88 -1.31,3.19 Q 20.38,20 18.5,20 Z"
      ></path>
      <path
        class="done done-check"
        pathLength="100"
        d="M 7.515,12.74 10.34143,15.563569 15.275,10.625"
      ></path>
    </svg>
  </svg>
  <div class="txt-upload">Upload</div>
</button>

<style>
/* From Uiverse.io by SelfMadeSystem  - Tags: animation, button, upload, line, lineart, line-art */
.button {
  position: relative;
  width: 10rem;
  height: 3rem;
  cursor: pointer;
  border: none;
  background: none;
}

.button svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.border {
  width: 100%;
  height: 100%;
  stroke: black;
  stroke-width: 2px;
  fill: #0000;
  rx: 1em;
  ry: 1em;
  stroke-dasharray: 25;
  transition: fill 0.25s;
  animation: 4s linear infinite stroke-animation;
}

.button:hover .border {
  fill: #0001;
}

.button:focus .border {
  transition: fill 0.25s 7.75s;
  fill: #0000;
}

@keyframes stroke-animation {
  0% {
    stroke-dashoffset: 100;
  }
  to {
    stroke-dashoffset: 0;
  }
}

.txt-upload {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.txt-upload::after {
  content: "";
}

.button:focus .rect {
  stroke-dasharray: 50;
}
.button:focus .border {
  stroke: #0000;
}

.button:focus .txt-upload {
  opacity: 0;
  transition: opacity 0.25s 8s;
}

.button:focus .txt-upload::after {
  animation: 0.66666s anim step-end forwards,
    1.33333s 0.6666s anim2 linear infinite alternate;
}

@keyframes anim {
  0% {
    content: "i";
  }
  50% {
    content: "in";
  }
  to {
    content: "ing";
  }
}

@keyframes anim2 {
  0% {
    content: "ing";
  }
  33% {
    content: "ing.";
  }
  66% {
    content: "ing..";
  }
  to {
    content: "ing...";
  }
}

.loading {
  width: 100%;
  height: 100%;
  stroke: #0055d4;
  stroke-width: 2px;
  fill: none;
  rx: 1em;
  ry: 1em;
  stroke-dasharray: 0 100;
}

.button:focus .loading {
  transition: stroke 0.5s 7.5s, stroke-dasharray 8s 0.5s ease-out;
  stroke: #08ca08;
  stroke-dasharray: 100 0;
}

.done {
  fill: none;
  stroke: #000;
  stroke-dasharray: 0 100;
}

.button:focus .done-cloud {
  transition: stroke-dasharray 0.75s 8.5s ease-out;
  stroke-dasharray: 100 0;
}

.button:focus .done-check {
  transition: stroke-dasharray 0.5s 9.2s ease-out;
  stroke: #08ca08;
  stroke-dasharray: 100 0;
}

</style>
    